{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x17cd7ddf94e4d1481ad8662e643119d2580d3cbe7b53821d772a99b8ccabbe49",
    "signature": "0x076b57afe36164f8a3591c1c239790cac5b75b1a93759d9c714fafd1cbc8a0780ab1613ac3deec33b2a0289baebcd5f75dc13df9afd14f59586ed0e46a9d042d1c",
    "signer": "0xd9c53074afbE0A31ECF8AAb5d899a8799f6bbFc3",
    "userId": "416697656"
  }
}