{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "482693489",
    "entityType": "User",
    "nonce": "0x54d7efbdd0bd6e1b6d88348f01df80d7301306e52b16e19054ef0db8a6926da9",
    "signature": "0x498318ff7a629eb6c33c8ee7483892edd9571129a3c37000d01dfe7507e103563f714a7a331b2a49741a8bc05db4366ade65d9df683c447aeab0f570bc377ce81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}