{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ecd95bafa7273f9b0d5526f63ee097912bea0f2de7130e3f36f2f7cea6f677c",
    "signature": "0x491c50c0ac08d2cc4558036ed5ac6b52e63f5c39ad9649c3a8032cf33a8ae6532116ccbac3a1c78afef95c38b945387b03a215b5b7add79383a57ed1d98d102a1c",
    "signer": "0x0e203AEFcCEd665ecbcE27153A02AAf6842934B1",
    "userId": "673436853"
  }
}