{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd23b01b0dc6d8fb012cfe9c437b809df6c5b61f943cac07c1e4f3b51bed8f74b",
    "signature": "0xc904459e1cb346584ba3bd04f2bf98c10b014a37bbe38b1c3e1ee71a58d916bf5970adf8e59c868a2853ec082f557072101d14b995a8b2554b61be2b8ed70ee21b",
    "signer": "0x3c22a81D38f10F1cD16CE91e03D4aDc697E6CdC5",
    "userId": "489312169"
  }
}