{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x222cf021418595e1ebe29cdaeb8fa6f6c1d281d18937f06b95223f64a281ab3a",
    "signature": "0xad401f1b5d5b5a585f42905ef96191e440addd1eb967059b7a991fca0a2eb3547c91322ee42e8cf548e548a03fa42babffa25b6894fb7ed4a1e4d72a292c46871b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}