{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x745890b2b5403552d1289144d516513417ebbd4b22b08d8adb832ffb549b3358",
    "signature": "0x048c4e699892e7f0923bde96705a60c180c80e770e7d5fe2e19414882e9e6be3726752f958c208551ac1b78afb92698450854502ae28e111bf7148f94af7f4451c",
    "signer": "0x2100b0D1aA8a04063cBc666729eF0aEaD9c67A00",
    "userId": "127906010"
  }
}