{
  "manageEntity": {
    "action": "Save",
    "entityId": "428381",
    "entityType": "Track",
    "nonce": "0x46a6e13239236c045bf99c90c414dac74b6928c76a0c002f22463c790b22b45f",
    "signature": "0x836e166619829b73594a81b96bf33c3005ade9ef6f2da0f065044826635eb6fc54baac4e7852efb91f9f6763c55fb79fe480b864ac9d07a0cbcda083289687981c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}