{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0051e078c354ab665e5eafcf77ba6808f20d0b9b12710b95507e9d863c1ec1a",
    "signature": "0x38dd9619cb004dd33c17be53ec74b90bd22a6708620e806c0ef23b70628261a35ea987eaa9be5c7e41b964f789d541a16cc4388395e357b2c52a08cf3e087df81b",
    "signer": "0x66430698532D7D491e867e152Df1E979c0ffa8Fd",
    "userId": "563212315"
  }
}