{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056376",
    "entityType": "Track",
    "nonce": "0x199b3d0593899ca07aab6b151875afe27a95468da8045136bcd027a37351838e",
    "signature": "0x7457e9285d1e8ff87a2d454f5a1e4b8bac17bf866feab533a78b54f4b84cbc95398029e7a0eedbe2e393d990dcb8a1a7dc0c38a20913f538a5b5fc20d4fc6eef1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}