{
  "manageEntity": {
    "action": "Save",
    "entityId": "1893610874",
    "entityType": "Track",
    "nonce": "0x0e8ae4c64a7e4d56f27bf5f049354a20aebcab7bea14843bd7c6ccf50f15f6c7",
    "signature": "0x79656023a3671a890178cbf4398e0d3f64985df83458f1d84d7ca8c81d72f0f1557ec634a306f3c3a95d13619074836c7d6ef92e5783d39d9ad837ea42397a7d1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}