{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342990",
    "entityType": "User",
    "nonce": "0xf7fbdfe91ad11848aa42b4f8796773794d1977a6623c4ea80687db653460947d",
    "signature": "0xc6a62198006b4d695035c7655b1d1da1584c09aa32a30e4a02f0c6f83b4d427c1077e13c2f0736add2abdcb0bda4defbbbd5c19676f83e518ec83dcd637b38fd1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}