{
  "manageEntity": {
    "action": "Save",
    "entityId": "395197910",
    "entityType": "Track",
    "nonce": "0xd736de26fa58d1c4ac0b3b48bb3c564727c611aec2baeecd2688fa6fa7e31dbb",
    "signature": "0xc0b210e53f988b1fccf823cf50f39c1fe2296e452de403996df0b4dca6ed3b8e76f97a6dd3bbe3c9c6e15ed751688cd96cba38d14d90ec2c9f6d5ad3e106443f1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}