{
  "manageEntity": {
    "action": "Save",
    "entityId": "165829",
    "entityType": "Track",
    "nonce": "0xa0817118284991a2f906d8de3135c8c5d85b575c7616b815e911581e14ffa3e9",
    "signature": "0x120dac9818922232a20daea56c14657daca2b2e3e538f1ebf36ec024ec36f4ea04b1f9110b14a849d8ca4cd0011367b83ce434c7e2fe2f297578f8d3d7fe25b71b",
    "signer": "0x13Cfd4BBEDA7CE58184A2E10DA1080385Fc7829e",
    "userId": "433129386"
  }
}