{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154324",
    "entityType": "User",
    "nonce": "0x74c34fd95f90dbe98d1c65fee01dea660c2a8cea5831834c7de35fae4fa58810",
    "signature": "0x35dbd43ea0ade529b97e33d4a52b289fc9a8cc0cf7f0f632307c69b65be043ec59db3bb46b698a84f86b82dbdaa26ed1ef66040c005979105f442f07386c90a71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}