{
  "manageEntity": {
    "action": "Save",
    "entityId": "1996434312",
    "entityType": "Track",
    "nonce": "0xab1841813e0b7242616ef3247a1200fb52e42024e185667e90695b02dc25d152",
    "signature": "0xefca7b1b22a04e9f3a02096b8c1adcc2e7af83155ad5d0410f20fa05ac2977184af0d7a5f3a594abdd0444149317151be0f9939fa285b0243ca4723c177b22601c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}