{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875647433",
    "entityType": "User",
    "nonce": "0xe090bd85940cd287718b4c719fb91c731255825029bd9b76675a3777e6da034b",
    "signature": "0x288c4c426c1f9b824fbc164f5db4ac08887d4a9001e2b8c5913ceefb21e36f6e501cd67efec40065a06189835f2afbcb0a90ef222d8229c7b9dab5bcbc0be9dd1c",
    "signer": "0x9Ebaa539cfe874f2a12f954d5f135d41C75Eac9A",
    "userId": "872121325"
  }
}