{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7eb83d7f2b8a7af9a5ab41516d135dd9c8a08a01d52f01c5418d28aabb3c13d6",
    "signature": "0x66c06f87e27a071be847fe9ae740b0397c7804357e0561534845364b8dd898d4690300dd2db5d4ef241bd1ba45d8dad2fd9d5e6ab2b79b5b28456ab8069ba1ac1c",
    "signer": "0x14bb3b1550f2311a0E1118D7638d97eb21ef519e",
    "userId": "905082780"
  }
}