{
  "manageEntity": {
    "action": "Update",
    "entityId": "616774019",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranwhvsi6bxlegohykimfr27usbx33iyzjsjvns5n4je5ol3rnsnnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1739295425}]}}}",
    "nonce": "0xd43a36cc69630b7ede648b10d8b3350aad3194e270e2fd214c68063924606bfe",
    "signature": "0x702556702a36378fac0c8bdecba258a291e08da33a27690d78700e0c0c896b252e49c63066a5e9af8cbe9d51b8ea112c0125fb216d57c6b2c9193b05d05a4a8f1c",
    "signer": "0x5865Afd791ac0d57a0f9e8Fa840D23CF3be86932",
    "userId": "616774019"
  }
}