{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417738678",
    "entityType": "Track",
    "nonce": "0x7386f68da3811cf83af8d68846bc9ec7628e2fafdf566d5d558ddeb44a640af3",
    "signature": "0x6f55deda232a37d3e86be12779c21aa3b8efc83504d4c11e6f420ed3191790a84d3494be12fb8156d6f249a0883039b17f00323dc6158480833dfeacb201fed71b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}