{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "847467862",
    "entityType": "User",
    "nonce": "0xe88dbee6c9941bf90bd024b69d234d3e553aebd10df511ece0b91ce0922e34cd",
    "signature": "0xfb82db78339e547cd0dc12bd64ed37faa98fdd5f81fd1a65d83ef3644d418d690d3e1d13e90cbd67de0c1af4854e16aaa11d0ec8114fde7340b08891166b51991c",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}