{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65ea3e1004f39b59ba5ce52afb81cf72c48eaf07e644f234b573392f919fe69f",
    "signature": "0x0f272891241659cd236ae7c6e3de6f46a5026e368421dc10e72683f6ec918e434da38989f6e1617e7e8c513d7f571aa39929855749079ce8dbcb7c08f83715861c",
    "signer": "0x3E2CcC7fA1d4697940e945930Ad5880557410Fec",
    "userId": "975230083"
  }
}