{
  "manageEntity": {
    "action": "Save",
    "entityId": "2134579093",
    "entityType": "Track",
    "nonce": "0xde4e5246a4e210c6480b55075ded625ec7836fe421bb7baf36e7ef6ba8dc9bc1",
    "signature": "0x5bee193834616813caf838bfdfc18699e304ff5e47011f69ca50e53b9a1052d36d6aa6d90e23be715fda785997432b5080fe45c89490aaa90615a0443dd80d3b1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}