{
  "manageEntity": {
    "action": "Save",
    "entityId": "1175726742",
    "entityType": "Track",
    "nonce": "0x969fa8fa7ca36f4b832a1a8cf6b0e67397ec7a80c1ac865fb6a0f70648844a81",
    "signature": "0x9194bfec7de9d2c461e09b7eec9c13339226d2d26eeafa63cf117d392783d1c4716a9160abbd7316d7a39d70db708d8934ad035b3c7a29f911ac1e8ee84423121b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}