{
  "manageEntity": {
    "action": "Update",
    "entityId": "199847019",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierao6lw2wxuwtpal4pjzujtyo42tkcoyge4j3kzaxlhkaaojbp7l7ua\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1662128796}]}}}",
    "nonce": "0xaecabb583b63e17b85a19891bed957bed2c1392dcf1b737e257a84d3802c5b9b",
    "signature": "0x3afaa830be631b358875a99640da6e90c72db857575989e0f7bc28e1972eb6d72c7b2b50e42de20c6411101d77b4eab05105f593464514c50e4f0cb8c77c33981c",
    "signer": "0xD1ee185A4D0DADa204Be95e503587fA357d65D02",
    "userId": "199847019"
  }
}