{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43dd031b0ceed1b500d0d84ead2da615693f71ccb87f0b51875ade3cdc4a5b55",
    "signature": "0xcee4292c697d799274c373e443b7e871f29b95d282abcdb1cb841d4dd94980967e69488d5e6a26b63f2e632eac4fdaab12031f21e351c652dac508f80fd5f2481b",
    "signer": "0x545B64d85e0d9fe383d66fCF99e8f5A404B1EED4",
    "userId": "271095155"
  }
}