{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330481",
    "entityType": "User",
    "nonce": "0x797624f50197169f5fc2a29c6b68e11615121d1cf75f45eb3ec94c6efa8fc697",
    "signature": "0x21d6ed00e43d3e64438b14a1f63fab6708af12d50464eb9df0aab243b889fcf31ba0c07eeffc42446ee1061503bcf0bb206a1fedb37bb239339b76be23d817c71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}