{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xcf0cf11a4bc30e43f8675e08f920b7fec085bcc777852b151d5907ba7ac2e026",
    "signature": "0x58bf7d9195267bc2a96689c5ef824bbc9ef1e6f565f27e2b678e8d5caf6cec71532e47c4b915bb453e98be7206b3fb371ad32f828f9a8234cdd7cab5cbf1a3791c",
    "signer": "0xD45eA8Cf50fb8eaCDeC2649A53a5C43457255fC4",
    "userId": "813324888"
  }
}