{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0x41e403d934e8a8645dc5bd98896e6927c358a04836f6fb4ef0023cd577284ac8",
    "signature": "0x2968eeb062f3e49de9b6da6bdd09bf9eed4dffb80573752edb8d8d77cc4ae8ea3d1bdf2143cff1b2a76e736a2c145822995975dd2fec974d84f05c3e323876a71c",
    "signer": "0x8e5A6D0829f4226DC492757b1583CBd16b7666B3",
    "userId": "582447217"
  }
}