{
  "manageEntity": {
    "action": "Save",
    "entityId": "181642092",
    "entityType": "Track",
    "nonce": "0xe909e7152e676cb7d2b8f2845117da6c72d51ef940c2bd848f0a3ab9d24953a5",
    "signature": "0xa7228596fdd39b84d7504a6fae51c3ace77d234b13c14a4423a64f7b5a3614b32d8bc02271bff1f1fdbb76a947b29b768dca096f61bc3f9e0d7501cacc5ce81f1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}