{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143388",
    "entityType": "User",
    "nonce": "0xb758f1d75aa96ecdbc044aa45e3eb642f38279d327794f732149506d6093997f",
    "signature": "0xde2c586056ebf933900e2bcef58f5f36103c679293c5fdff647d4955ff5040573f8c9abebd35d93d0b36180345565cb5e252c89f1c3741a118567ad0a536354d1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}