{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4350574",
    "entityType": "User",
    "nonce": "0xc0ba8f5783a188d1b2fe9ad79ce4afd3187b98284f97fd07dc8b5f070dea2455",
    "signature": "0xd0992b26c3d0bd60d2f7367712b52f355695e778ef5be0edf74b45f4b88ac7890ccdefae8a4d24f421cb2b2058890c87ce5a86d2feac613169b39803a7d9c2eb1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}