{
  "manageEntity": {
    "action": "Save",
    "entityId": "1282238934",
    "entityType": "Track",
    "nonce": "0xecdbd2f0b1ea03240dfc9c55c4eb91bb8db3ba952d713036f1d6e644c93767eb",
    "signature": "0xa0f8c4de0bb5b91ea1d0ce5c445d4a9189c4dd4aac51bf32d5dd7da6ed51e30c044ae8203e9b14943fb001e0d9007648f1212434f91b6bd3ee53f574d73d686e1c",
    "signer": "0x354f479338B7F1593E5Ed2Bdb91a09c4bD12996C",
    "userId": "381478870"
  }
}