{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x39b795a23410b24f02837846fea7d6ce863cdcbf88c166452f4368366c3bca85",
    "signature": "0x1754293229bb99c39cbacba3dcbb8609d62b808d98c45a7739aa56c1014017355b11a8ff60269fe9be081baa92a0f2c4f8687a31444f6c0f7df09dd6add21f9c1c",
    "signer": "0xf661d714D27077835b9e5f4d5C59Db2a60835833",
    "userId": "460644567"
  }
}