{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154583694",
    "entityType": "User",
    "nonce": "0x10307f11dfe129f897d148881412babcc306d4f7541f1cdbeeab693bcc71c2b8",
    "signature": "0x8c20c751136645b7f14300348b50eda32361bb75837babc82fa8820ca465f60e3cd7329f679659ae4d00dca3d499ba95e585a71ced74edc5842a7a29f80b3d0e1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}