{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140903",
    "entityType": "User",
    "nonce": "0x563ce8cf1d7cad823432778ad91c0417af86bfafaa780a0b0746c92ff569ba64",
    "signature": "0x770d28f809ded90325bd77a26f81a8795597327466bad72ced18aebe88c446d47baf5f67b98fbfc3647cceac5db752224aaf847a3164541a343daf7b170259b91b",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}