{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278883",
    "entityType": "User",
    "nonce": "0xcec9af04db39263a1ec1ce7af4ce284ac655690652936fe12b1a37d33b7a7b31",
    "signature": "0x61763d679fca08b1c6f0276e7ba9039d4790f78e22b22eaf94acdce5e48f54d73f441ace89f1eadef03148d17b92e32c9b2a241f6253835dcf02b37b012ce16c1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}