{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1489713",
    "entityType": "User",
    "nonce": "0x0d7016245d6816526e7ef8bd7faebcb403a911ef9033ff7fc1601969fa095e14",
    "signature": "0x83f9a012a5aecf57bec3167e97c104b36339655af07f99666d2987519ce8c63f3a06b30477429370bf06d5f1cf44cf6e6e1329e041adca4cb1856d355ba310161c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}