{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x906af32dd971a9547321afe16f10f4420973b66fafb089f213614115a19646e7",
    "signature": "0x7d23e103f1e61ab76380b831043a99b58a36c2f706fcbd7d29a2fe6d2a73b70153330e8a3f8e52456f9b151ae5260bbc297394b9463c5ea59f48dd92ec7cb45f1b",
    "signer": "0xc7eCAd44714A236078c716E099089D001F140d9e",
    "userId": "491375222"
  }
}