{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b753aca904ce18e76818fe1b37359e8df00ff99015e7dda41aa2edd5573814a",
    "signature": "0x69f22439025e63a2c8a6309abbd496fed54f7be15786f21c4d4b76a18bc098753789a1e21fc892f4b92a178c1843dec2939965427bbedff80efb3830b0179c091c",
    "signer": "0xA8CCB2f7347eb0eAF35171eDbD0410B2fF7A049c",
    "userId": "329392138"
  }
}