{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d1830b983a54b01f6a3b78fc4d2fb0b6e85c31ddffc66190de2d5230c537902",
    "signature": "0x6bd940201d9862225af41c0dcf6b30bfea404540ddc960542998dd084d9b3adc486379977a4eccd68d8da4c6687db8b828ce1d03016127c5fc7e790a295b92511b",
    "signer": "0x905ddEDd78202e65E3E3e87Ff2642F63C2648695",
    "userId": "872670484"
  }
}