{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x957add6bd2bb91b20d033d93770519eb504fb89e22cd2ef15e77580a114d293f",
    "signature": "0x8065269784f8e90054d65a03bd035b668b40a0e9455cca85006d323309f6dd4d6f5e16c8c79e76ee644a3495cef7683acc530a14796676e7fabcac2211a63ccc1b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}