{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "434074077",
    "entityType": "User",
    "nonce": "0x51703410d086283514845a79f6d632c53ce67aba0e05e75bb6828d312f57d696",
    "signature": "0x2f625a988dc8474db68480a398787ceadc99987dcabc6073b977225bedd0f9646d018a5181b629bbafae0e45c07869cac5e8a888bce07afa3c1d35578fd76bb31b",
    "signer": "0xD4c9d0605f6C93f0dD2FDe2174912AABB7BD2CC4",
    "userId": "594755965"
  }
}