{
  "manageEntity": {
    "action": "Save",
    "entityId": "1214992594",
    "entityType": "Track",
    "nonce": "0x98292b3d342206beb62a3e198c3087e1d73e6b711340ae12382bf6bf14388793",
    "signature": "0xd293f52829f4488757319794c8301ac66ba32255bfa8a10c00af2c9c07081554661ce31b2a1badddef4aa65b0cf71f2aeb9ae2ecee054f6eab6ba59a72121bda1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}