{
  "manageEntity": {
    "action": "Save",
    "entityId": "1483957896",
    "entityType": "Track",
    "nonce": "0xc4c83f8602beae26905f5e08b5a7e5fe2c26879a26b4fff89af9cdd832b35914",
    "signature": "0x94dc4dd17cdaab7703892b4c7714e32a4501ec93159f358c038e0ec37c374f613f823f776aaab5f92ca1523d5ee575df7f8263a6bc8a3653899d419d25d0ef401c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}