{
  "manageEntity": {
    "action": "Save",
    "entityId": "13882537",
    "entityType": "Track",
    "nonce": "0x0ea071d121b81a7fd6d9305161fbcdd8e1e361880a2f90510b3388293e524051",
    "signature": "0xb8b8985ebc99d8f034967f537035b99abebe78c7bb9cc5db554f151681c729e072df2b0f09c2612512f79d6821492d7f5bd20e9630afe36f4deaf20e9ae1789c1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}