{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9133b809dc54d3d2e47eca32f8d878151d405981abe6d89331f7c40119f901ab",
    "signature": "0xa1596660244b7131a8202bd5799a3d6cf371ec9744aac413c946bc3d9f87afa273aa42abca409195a5f4b7ea71e14cafdfb175e61154d74b5e3c55f02ee7cbe51c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}