{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420563019",
    "entityType": "User",
    "nonce": "0xec4a59f3841ec6b20955c987b752e69d3686699259fb53f753aed69fe33863ef",
    "signature": "0x5299f8c88be7eefa16691b9bb1b209fccbb836bcf9e8b5d8014d8b87f41e8a206c088aafedc8fd106004563183bf3b133eff8688c0e07c3f1b74fe00cb2769df1b",
    "signer": "0xcd864e8A0A043bf1B2DA4106C35c1daF234468a5",
    "userId": "784246910"
  }
}