{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd511902c7f46eed145259527d61aec98840cc5b7120b5ec0cd5f31c53b110a0d",
    "signature": "0x84e0f479923d0d234c6b76e72af985e84ddb25d8f4e7cc8b0dfd1828ddff66794bfc5aeb1750e647a1a90735ff4b78eafb86825ccdf264a6bec21f80481076c51c",
    "signer": "0x90Fd90dD6089EEAe473E5d50F861D546521459a7",
    "userId": "438760710"
  }
}