{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176299203",
    "entityType": "Track",
    "nonce": "0xcd97b8013900021d4d4cf4ac5f7664371f044c8cff7c5887f1764947fd668f2f",
    "signature": "0x7a61e740cc0811115edeb5daa3808a2dd05a87741f63c539de1634dfa9b3669b345029277662ac0bb8b4a72cb77513f1f26c2330fc2a3e2e754b09343205fcea1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}