{
  "manageEntity": {
    "action": "Save",
    "entityId": "1189565980",
    "entityType": "Track",
    "nonce": "0x56ca02ce808b837905c985f95ac5e673d7b809f0902d28a724517b18c028f80a",
    "signature": "0x26bb12d84cd0bd949bff86e51112b2a96d6fd1a6ed5ad6803aea7e0dfd60ed0a210c30c3eab3ce441c3a5df6dded8cb53e70487bbce81aa97bba02f0134f38901b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}