{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x002d31d3aebd5ad80d7ff6ab55582e09d419d3b3e5f7ae64d08160dfc4e44e3f",
    "signature": "0xf7d9999217a8ab566a8a853631bf3a3da653a7ef93b45ce2a462b0b94345a7de7b4c975d77a7ea271341d5293e70b84cf7c4e0efb9d0ce3157ccbb4f8797627d1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}