{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "27447",
    "entityType": "User",
    "nonce": "0xb857e47dda0eee3aff02e1b2561e36de1f0fb198178a4909f0c5fd3b50df9cac",
    "signature": "0xcf58f85d17aad3130b4b5cf1207952acfe10af4a74d52f01cef7a27808e3896219ccbf67b0f778ae5352894e9437e0b9c1f1f5c5bf9d5cfd224943d2c31803c91b",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}