{
  "manageEntity": {
    "action": "Update",
    "entityId": "144808967",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x620301518779dc212e3555bdff948a1dc59ee38db57817bea9d72f13b493a8cd",
    "signature": "0x6895cf584e620ed0ad364632c717ca98475417ba400970fbe0cbe22066bcf1051133fd1171d2af7ff50c0847cf15b16cac0a485698fe2ddbd45de6174d7bd72b1b",
    "signer": "0xFaa46B3880Ba37898550cF68DfA837748B6EB313",
    "userId": "144808967"
  }
}