{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309780980",
    "entityType": "Track",
    "nonce": "0xe8ff3f69dd070bd076b6885ed0393606de9b20e7ad1282cfc7970efe4939344e",
    "signature": "0x18bc6c05a10aede65dc4eb720045143ef4c1674a13c40b6fbc89138a953312c75dd1418c9e03aecbf848736a5cc3b205ab5d00f3e01f480bd32fbbeeb748035f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}