{
  "manageEntity": {
    "action": "Update",
    "entityId": "628071222",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera4ujklnis4lgwlnarjbgwwyjkw6pifirlf52nstdsq4eid64v4whq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1492402307}]}}}",
    "nonce": "0x56e2377d4eecf1bd811aaf8482fd090e85c55d68409f24855b0495a18ea828b1",
    "signature": "0xb1043b6969a8b9688bbe6d48418ae17287098792e70bc3b110c2807fdfc31dca13fc4c0d9f510adee199f9ab2850c7e95f8b9a6a7f9bd604326a0bd5d0f904251c",
    "signer": "0x5c594Bd3B3aC930f825D236e5cF8eCBF0b85513e",
    "userId": "628071222"
  }
}