{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x13639a48520cb1a94b44ccaed95ae7de905bd74809cfcd4ec6c9f59a635ef13a",
    "signature": "0x24900d13c276dc3aad9c3da5e5dd0b4fe1e67f209392de9daa210752d68ff2713edab1de02b5382339dced68501fbc415d35f34c8286a73a50eb8a990fc8aa311b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}