{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9c26ba5ea08be75cf9aad0b0ecb7bb27bf6e043d501ead8b1c20190717b4130",
    "signature": "0xa5df56336688c1a431ee2a17442307bc27ed15265d35f8efc5df849ee056097f1a98cd94e9db0790d85e1e6db67903f5694ac31f260371fd7a4fcbe4835098601c",
    "signer": "0x4261723Ad2A78F3d78602385a2D62B4Fa88d3Eaf",
    "userId": "852373234"
  }
}