{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8a88b6ef62692b8e75b7613ba41976fa107bef809fdd66ab6f43449ce3439c37",
    "signature": "0x616bc5cd35671a5acc010677aef00185f7c215d74f6e04b5b6430bcfc1f342a72379a0fe37b5ee245217cac0586e4e81f23e2dc4adb8f43b14c1d83bebd63f6b1b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}