{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x7a8b6ad2e8608d6988587dadb91c36f990fbb218d52d4bb13c0191a3ec912cc2",
    "signature": "0x4f68274870124bd3c307ef7765efacd0faa1610515c05b486bc17c3cf08328be21b7283742465bb14819541484956f0c6995a12cd4dbcc5fb04ad8176c20d8811c",
    "signer": "0xAA981726F7939BF5eaAbfa9a58D0C454f5cB535D",
    "userId": "398277387"
  }
}