{
  "manageEntity": {
    "action": "Update",
    "entityId": "353878703",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraiddh4ylghov2d33eiwgcufwauclmbck23gmhtcrfgnl6nyr3epkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1145335783},{\"type\":\"playlist\",\"playlist_id\":1230843816}]}}}",
    "nonce": "0xd1cb80612ee37685cf8374afb56e93aa2e8d183c4ca082b0b0c5ad21e7fd7e35",
    "signature": "0xa0d85284f34e90eabe9a47d561688b1660707e7e444ad0a8339b29651baad46303f27cbd0741068ad903fdbd15434ab31b65e928d61a3fa1858aab299c5be8d11b",
    "signer": "0xA9a8cC80334aEfE9dca7cA4b3B306705139fE37b",
    "userId": "353878703"
  }
}