{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4681ee456d86fcba1e714788fc863a437e606f80a430e8dd2fecf342f8df51a0",
    "signature": "0x1d1f62c559141878e038ef078fa28127ecf3409f55652fc04725d56f6a77ce83615192450768ad30c21e29fd5618c017222370f56e250055ec1b841b52e689751b",
    "signer": "0x56eb77a888c3D5937d21169964968236FCC1edb5",
    "userId": "941572385"
  }
}