{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb830fc1d4706ea3965e11a07f6552a4b5d33c54d865b8b1a3f3c1fd2bfc813f4",
    "signature": "0xc9c09b9853813ce1908042f97797968c69e2fa1870b8cbde27e731341c4a7352053bb1180c360cb6c10b4622a2e66a67d63d42110972c27a56cd5d8e46a8f23b1c",
    "signer": "0x7e3c1c5Cb03F8cBd51cF87BA7f53B36573673C5B",
    "userId": "446202131"
  }
}