{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "779855",
    "entityType": "User",
    "nonce": "0xb8381bb1ebd88e19b850c9655494e3ccd866ce045cf8d156f552fa69300203c5",
    "signature": "0x12392b7e421f9987a23974d40926157995de4ae5383142461a302a628b9e263979082869bacd747b29b6d9d33046ba91bbe43e1069bec6edf526ed93daeb49c41b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}