{
  "manageEntity": {
    "action": "Save",
    "entityId": "1595201168",
    "entityType": "Track",
    "nonce": "0x95ca573c11207501ce586399715ba5f90e657113cbf66bfe1bbf07aa8aa1e4ae",
    "signature": "0xe96f7f12e46694cc1340140ad99092e5df1b97f2ee0adaf9c1a25b5dc773ab4e51cd8a44456c09b81026d0d08edb840ebec3645b1a2e92574c613569d7975cb71b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}