{
  "manageEntity": {
    "action": "Save",
    "entityId": "1057815",
    "entityType": "Track",
    "nonce": "0xf523a3ae595eb718462c8c8342767056d278e72449b23dedfdef0388b9994de2",
    "signature": "0xce7b8a0955a05a977d9f7c345cc12d7211598c0da5eacca16a81e191ac11d7d5717ce635f86ce2c280fe24a4d28e7ce2f53ad0158eb786863469c7bd160b0d531c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}