{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x848e6ed30bd6f6de0bf5b48baf908b517d33751f097c563acef95801fe7ae334",
    "signature": "0x2ff7ba445e40595b0e1f5098be966fe45342ed113ad17c1b7fa3717f3b9e1f244e7843729fd801f1534f8fb2cf5782fb80e66986dd9e383de0b7fc144d19444c1b",
    "signer": "0x31b9fC615314b35bfCF7e568c00b43D108cfb57f",
    "userId": "867332238"
  }
}