{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134821",
    "entityType": "User",
    "nonce": "0xf5a2e3a36039d003b5b69bfd397f09f57a4c81c8bc9ed6a778a4bc3861ff6875",
    "signature": "0x0d93b38c95925a025a81c54c2b84213df29b6a25109045ca79574bae6d77d64f6e3c51bde3f969792d54ed8114f92da1ffe9bf17811e7b086d94391f03b82cec1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}