{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd840f7a7901b2a643bfff952a9cc7d28d51efc437588547d358be835a2a870a3",
    "signature": "0x0aae7c41484cbad3c8a4800e2232a5d8e00c5feeab4b3ea79288433b1c46931858109b36ad148d397d282994bb9ed3a49100438da0b17d32b0f5b7eaacc4a7161b",
    "signer": "0x0157D745aebb0AD9f297C69193065ce6fBB09853",
    "userId": "208486764"
  }
}