{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x6a4c413a64791473ea892d78af40f4172cbe55177769a07bd88462ddf51b6bbf",
    "signature": "0x49f79cd8771c4fdd32422161764ddeed55247f6ec566af09814e6730f3eee2856a5957d36f8caa36815dd02a8de1f2c10274ace2c1ba69fe8e8c7fe5b57f47511c",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}