{
  "manageEntity": {
    "action": "Update",
    "entityId": "438962506",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xed914021a1b645fa41635b603bc16dc88f9a72059a6c42f89cbd708583311eec",
    "signature": "0x60d864639e515938c3a3f154c63bac24ab76bf199f5cd5d0d25980521db00534772b10b289fc4b18bdb754eb2c2f196f4c6247ba7125e0132910e14b7c6ea1671c",
    "signer": "0x01965c6FF7251e5cBc32D192074e36cBF826eb6b",
    "userId": "438962506"
  }
}