{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "857590095",
    "entityType": "User",
    "nonce": "0xb45089adad89085bac28c8d77ae5fc538da06d23de39cd48895e8b26c92843f6",
    "signature": "0xd5b4c08828ea87c2b37e44d482e16d69e585c362c8e9b819632773de68a371de5b4bb54a710b5a95542fd7006671fb75435e1d6163e911960c24503d71e573ff1c",
    "signer": "0x5156122E7f53a879786546b3133306b9F7814b9b",
    "userId": "781663071"
  }
}