{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeee3e50175fdfb9f95983ad1f6ab74c71cb46efcd365fc24861b3347ca86b1b4",
    "signature": "0xf131c92cd98a2aa35676bdcf020dfc10eb435ddb5bdaf275844cfb8bcc65ae684e5ffb12e021b883f526b29b31b6a4a2441382a7cb4d0c4ecd2ab90cbd17f6701c",
    "signer": "0x06902ed62bf3DeB2BA8Bb75F08cE93c1E87A7Ec7",
    "userId": "789121538"
  }
}