{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019461127",
    "entityType": "Track",
    "nonce": "0xde9205eeb340fecbf59efe6b44617dd9bb6009c4edec26c7f5851ab793dfdb45",
    "signature": "0xed540524f6784e7cbdd98301c0ce96e3313ce23b76b29bb7f708f242d68becab548c9101e13ad8d83142fd0e3b361a94c577e2a0ed7eb3472e5b23e504288d661c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}