{
  "manageEntity": {
    "action": "Save",
    "entityId": "801428367",
    "entityType": "Track",
    "nonce": "0x8de0f9b7e0ac062f086c0cc3252ff1405b80fbff7bf00eae08c1abf1e0ca291f",
    "signature": "0xe32433d45028f945d5786a96ad0120aa20b51ef13d8167207f594f061bafe04149d753e69de7bce6c5a8e247d91b6cf291988e7e95a85982358cc7cd21c8c0361c",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}