{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7740e9a83fc2f96cfeb81daa0c78a7774f8f5ffde0d82c81c7b12621b5d63b10",
    "signature": "0x8d9028140a073504c5bb74b51a51e9c169245d2b3d0df94529fc83e7bf63af2c5ae58970453c6a17033121bc8a167e8955014cec107022f89b10d82cacc3c4a81b",
    "signer": "0x04466826b559ff734EAe9491Bf4C1a3c2fFBA6a8",
    "userId": "272534777"
  }
}