{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223261807",
    "entityType": "User",
    "nonce": "0x493e4718a3152157973af5c555193fb02eb254dababdec40971eaa4d9d2203ab",
    "signature": "0xe1e47d853ad28e29658e5bfc7a7e6d29259caa96be3de32cf597abe83d3ec1ee1b995c1d63db0f449f9d228fb686580c9f0aac88559d358c632c22494980274e1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}