{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4443",
    "entityType": "User",
    "nonce": "0x4839a0b49c87cbd875ec414c05b8fcf53431f4a9d668a2c48ef4f8351c6ab786",
    "signature": "0xd333683932f25b4baae88e7c6aeedcbbdca4d262d10af5b7be4e4b9f41ba662b72b09c05a539da9debde9428f2f67250a370c8fa6adc5f4ee4d0553bfd001c141c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}