{
  "manageEntity": {
    "action": "Update",
    "entityId": "749705090",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramyyawrplnwopbfttddkuoufe446ymvykgdvhunv6mi33kb4xp7ta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1558961897}]}}}",
    "nonce": "0xe53b0ca646bbd3abefa4b9bd60e7c84592f09fc0bdbb9647b1febe76b5bade91",
    "signature": "0xead4510ff4576e0bb85611dbf456dedbd78d6fca6db1861e97ac9c92a6102572366787a676165fb1c7a0bb0f762acba45d7dd571bdb50e4b0717cb62e35b2a071c",
    "signer": "0x8A86E9733Ee8B12D5eBEf355C925e3e502284B17",
    "userId": "749705090"
  }
}