{
  "manageEntity": {
    "action": "Save",
    "entityId": "13894652",
    "entityType": "Track",
    "nonce": "0xb89c5ccf39316dd678002066d3bf1e1661db0735ab866fc8dc5e9d129bce2ef4",
    "signature": "0x24d8b3dee1d0f4d657832171b73c0781973bb76a7fd1298869090cb4da273c056a4e2ed800e1670dfc6e04d5dcf71145ad3309469502fcf3dadf08511f19d1b61c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}