{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbef77f189cba63f1d51f79e5b01cff5dc49bb9b48a38eb10ddee0c6d5dfc7afb",
    "signature": "0x9edc8ae35853bde84102762bac246f62aef6c071d39a05a1c904b5548939b8ed0572aa05000738c757f703aac1f763fd5770d8d06813a2f8007580b77e96d5a81c",
    "signer": "0xe9c0886CCB64606bbE1a2f9360cF2DD44C9fA43E",
    "userId": "321427963"
  }
}