{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x2842f56754b4d8757514324d386001e6037799e74f4177ee52134ac9729c8f9c",
    "signature": "0x7703f530d0006fbb12503b4304c5e97986219c28f829c0e78933362f67a5349424cec31a9931fffb699d839cf03aac098000db268a46a2532e476727fc3e76c21b",
    "signer": "0xA7D206a8f2b63986B1Af437a01CFbCDCcE69601e",
    "userId": "856769027"
  }
}