{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2197",
    "entityType": "User",
    "nonce": "0xd678cb27ec6e4e0a87a169aba655079e41e2f531e5976d2af33fba7b9d79f080",
    "signature": "0x5d420e4b2308e2c988f1c2a018925e72662d73fa0e45dcf128b947925a309a160144f94036d3d40784cf0785240ad87a15268bb252763266ff672fd0dd05723a1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}