{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5413a9e969ffedde78a90f1b1fbc42b26b2495c69f57eb83619530057d81947b",
    "signature": "0x7287e75bd3c17753e9fed579f728089e527e2bbb3f041167af0cfad30700b7cf3a96afde6baed6486c901a5894e34e3ad226d803865d3c4056bab46da0332a651c",
    "signer": "0x5c729F689C65f09Ec39B6b2Cb77ba155418b8402",
    "userId": "784448678"
  }
}