{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x403c215e7141055fbfee900410ae261f6aad760b76e189655c2e4d3703ebdcb9",
    "signature": "0xcb7d705e20e3a06f1b8f9708f04ff4f096b1996f1c7e41281f246aff4c41727a1008716ff4a8df7467952ef7ca40713d73d0eb11a8c4b37e42daadca027d71d21b",
    "signer": "0x251f4316d79a4a2C37293F9335Fc2007700Be97f",
    "userId": "59773771"
  }
}