{
  "manageEntity": {
    "action": "Update",
    "entityId": "647219291",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdcf4eb22d5dde815c4b55980c99ae787b9f05212e6a1d831e858030fb626b93a",
    "signature": "0xd7e5a4dcb10c3dcd8115c1274bbfb61eb099553cd551a069a6c744842ada54b446aeb073798e1de0cb3ba454c84d2269a483e8d189e61d29cdb62124252533911c",
    "signer": "0xB4e78E0696D8bF171eCa6d2F8f3048B8bc3Af1c0",
    "userId": "647219291"
  }
}