{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839719864",
    "entityType": "User",
    "nonce": "0x054a831d392c3bfa35759237b4e51a8907c33a47ef2e569585388bbdb7c1620e",
    "signature": "0x0e06d706260625386916c57b0cf3a4f46a3526f1e1758c5183ca4e611bacc37c192f91d268f4f9a46f17706b5aec6d8ec60eba558bded1d64880845c7cb3e36d1c",
    "signer": "0x3c154BbB8f1ac3df4a7721Eef2A2198c385D2a85",
    "userId": "587797478"
  }
}