{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6318",
    "entityType": "User",
    "nonce": "0xabd549032092c5a8f142f989ac0cd8bf181044b171e91c501a4b2e4a20f64c67",
    "signature": "0xd475d90b1810948f9e7baa761dd24c9050240ddf8aaf3a164f099d573d1bcda51dfe4b648a76ce16c55278659c443273b94455cf408b570f5a2d0015418d78801c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}