{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "630067",
    "entityType": "User",
    "nonce": "0xd614f04b7414611e581c566e5cb90d2dc22a531bae443d04010e042a90a0e6ba",
    "signature": "0xa15b947323aceee828bd16106b789c537f3d5c1053256385a83d1d5b05c2ae681cafc4c435f610130f764a80a0766a1cac587a8180b56154d2f4db5a6adecc441c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}