{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48341",
    "entityType": "User",
    "nonce": "0x43d21a564a66758d4c0f41f242f4a79d73445e590b0340b3c10db45f6c3b653a",
    "signature": "0xb272594c991b5fa5a6c422f127167c764f02dff233d17c238929f6bb0dd9c6c820669072cdfdc7120526713587d65424f85d99c0fd92e70a6b33669b509d9c041b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}