{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851552461",
    "entityType": "User",
    "nonce": "0xef3cbba38963eb73e68fcad41a5f4d87619d5023e7c6e24e97447c8b7a179f83",
    "signature": "0xb8b855d0bf5ff4b4de42caeb3105cc347967a5174d3ec88190d14ee158758f0427aeb0aeac509241d826e58f0b65812b70bde380b84489f1ac0a605a83f985351c",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}