{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe1fb0bf8cbdaeaf496b805c38d2d0d5a91e9dda4416ed94e3995a03043eff11e",
    "signature": "0xae84a754b40ccb815bea4c03577c3121e5e2a4b81ada029cb36a2e3fefb7945138650f4737011da556e8c6aeec5a7182c94ecd29545e37990191e5966e4ce9701b",
    "signer": "0xa4D14E2De7F2f2aD7aa7E9249BC61fcBb5af822e",
    "userId": "747291502"
  }
}