{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13618851",
    "entityType": "User",
    "nonce": "0x42a17670c4bd7cc70be98cbffbb9de6e3b920d787ad038988a2b18d25d2bd590",
    "signature": "0x029664916bd2e1b00024932e4a5aaffb0970219cb9d72207161e14de21cb533c02a1d1566954156356ac0b30a71ac1bc581ee7b13405f28327b84b273b6d1d971b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}