{
  "manageEntity": {
    "action": "Save",
    "entityId": "1152852228",
    "entityType": "Track",
    "nonce": "0x6fa308ee0d7f00f2aea8d2cd35313019246dfd47b799120c7f6b48bd5c4a140f",
    "signature": "0xa10aef19f092f9fd90292a75f2e7df4da2b4ce6373551d715a4aab37abe11fb156be245385d5b2778ba7fef78f5ecbb7c9493f575834fff62c26e11cb84ba8be1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}