{
  "manageEntity": {
    "action": "Save",
    "entityId": "1445469178",
    "entityType": "Track",
    "nonce": "0xf6073ba6b0dc3a70e2f12e8b1d742e15a49a07213afa7bd2758c220d68e2bb5e",
    "signature": "0x662b94a54de252b9d2b2c0fb8fb7838ec4beb61021ec1d12a0a976ce77551f2932f114c016e0106acc636fd41191fe23c64f38faa0f775297ed4b826ab54c2271b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}