{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105001",
    "entityType": "User",
    "nonce": "0xb215d2b464372e85b3f898ca1d9b05b18f4866b7d009f37f944f7b2c827c9408",
    "signature": "0x5380bc18f3ad5a00cab39ad16e32af12e62e0a6e53325788d7fb6c978f8eea6e43a23a257e45e026112a79c6734710bcf4d4a6526ae9ed99e54fc5489a1a28021b",
    "signer": "0x5f0888943c5151AD92380E0b8bae6e39110f041E",
    "userId": "837012197"
  }
}