{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964257878",
    "entityType": "User",
    "nonce": "0x24a7e6cfb73d7f1a188b22560ade25d4c81f6242258eea61f1d6966e89a41787",
    "signature": "0xfc3ff9bd90e36dbd29827abc3bc4e81172ee70c2a74b5986e459348de4132e0b35811097d4ea1d7dc15b9b78db5156a4ee072a6a786e75ad8072dc2ea20f031a1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}