{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836635042",
    "entityType": "Track",
    "nonce": "0x653b935886970964a2598c1fbef394e6f00e6f12ee6342fd1ca8a68902a80297",
    "signature": "0x348f9f3221f5c2b28098a509b5f9147b0fec798dfbdceadb1d676e2c55ee80d23f0265410e7172d2e517b3a19ba6eac8591976070b5b62423808045edda627a01c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}