{
  "manageEntity": {
    "action": "Save",
    "entityId": "1108424134",
    "entityType": "Track",
    "nonce": "0x295f849662f35b71c87c88956925797ab2e806f4a25ee8ae437b063cb94221c2",
    "signature": "0x8bc7afb9d74338a7b0ed16e5f8026a8f1ec316dd8548b407db4fde6b8bdf7636637eb43178e803f7a1505ab0af31bbb82ccfe6863f195d27d32d0a761f6095781c",
    "signer": "0x061A60900C738C67bcf3F9Cb7Fe8f703DbEc8Ee0",
    "userId": "718327235"
  }
}