{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388966743",
    "entityType": "User",
    "nonce": "0xca6a2f577d46419bc6c2927e34be39b56d2b1d7264cd08a0966a609bbdbb48e3",
    "signature": "0xe0e5de73086ccf103b02c839b87b897bfae90981cfb0a0e0d8947f1c81ffa8cb10d89b994e21a3b7679653fd21137487138a00b73a798a065851a34862878e0e1b",
    "signer": "0xA9C30cc9EEAf368737C2840254723a9F553f3cD8",
    "userId": "114153440"
  }
}