{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x557e55c84e0270338544dae8cac4fb7b28a39ab1cdeaaeb30ce36faaa6175f01",
    "signature": "0x81b41df88050ceaba9968c8ecccfad9899a7b0d0dcad43aa7a0fee3a6a9f06b353d5209703a90dc1104b417c68aab999ace51055975ab11346df17f3c3a967a41c",
    "signer": "0x800dA3d4Da0803923959A8B596ffe8757a58918c",
    "userId": "95244597"
  }
}