{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21e49cecb82d699657cc6b4316bb096ded9b772fe01f4fb855abacb492c859c7",
    "signature": "0xc4740061d37079f1e460b9d96a8e2c45f3bdf86243a8b82ea64b7c69f3f6aa6e7b62ae52f9513d35f61805a23d309e1078a9d746a1cd167c29a380f57b2781a31c",
    "signer": "0xE7Fc610afe51483AF4fB8fb5F981AC5843548D77",
    "userId": "117638061"
  }
}