{
  "manageEntity": {
    "action": "Save",
    "entityId": "1906838005",
    "entityType": "Track",
    "nonce": "0x333622e68451da4006f0deb1d629769215bcd08629a1cca40e0e5496a9c21299",
    "signature": "0x0357a00c2bd8812869cfe245f95909efd59cb2341d06f5f1fdcc50da742b38431f0c559f727e1bfcbe2a4ccca7ff70362315b6485da76e4ae9c281a355a514761c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}