{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0xb2a07b56a35060f8325611e26689f9457b7d4a802de6253f54829b94e47e45ed",
    "signature": "0xf5812fa624c240655ab8621d7114caa191bea26b298ee2cf2382794551cb771615a69bf3ebefb925856a71ba519d02fb7a1cd47aff54551192aa5975d16977351b",
    "signer": "0x4Ff77Da6D5C7286ea15F7F94FdCC04a641dE9a27",
    "userId": "512734349"
  }
}