{
  "manageEntity": {
    "action": "Save",
    "entityId": "812278843",
    "entityType": "Track",
    "nonce": "0xb7df4369a3ddd422af629c8a21708237af4f785a01e7931e409865c1d02bfcee",
    "signature": "0x0c8ee79822eaf4001bd0f89f88bd78caebf92668432d5555cfd64538fffa615a2d4aa3bba0c359676415fc5eb02a9d1db083a8c7a5fdff310e872d88a660cfef1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}