{
  "manageEntity": {
    "action": "Save",
    "entityId": "960887539",
    "entityType": "Track",
    "nonce": "0x54d74eb00e71ac4dbf65b131f6384397ad70797ef50755222dcdaf875b1c2c4f",
    "signature": "0x9d88fd3ef5b14efbf5573217275413658155ba7cbb1fe3ad2329884894e358dd73361823e1f43a0ebc70f2d371f10dfa1b4598806aba14c19efee5d7ac9dfc661b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}