{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48340",
    "entityType": "User",
    "nonce": "0x873423f9d91d7809c5e6c6f2a58a6d47637ce822c04529e8e3ab3a5c8de05a00",
    "signature": "0x6975cb6948a08e75941e0c49d0f7d4206537165f4033561b47516eaa5be53c0d33d1dac77116da93f33ae0db7e0ed5fd9a751e55bfccf9be2be8a3becfada77d1b",
    "signer": "0x4C4008E72CEac0c3d72E24C15F5467E1eA159bab",
    "userId": "101887422"
  }
}