{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "490478463",
    "entityType": "User",
    "nonce": "0x45e16f368d6111eabead456c7c12da93dc9e9cd5fb6a1b491acc7c33088ed8d4",
    "signature": "0x7c3caf5661afc9e70bb1ce486f65ed3fdb4448a2e6061397fb56a0978f4b6a037d29362289734455f3f9640c71a3c8a335061fc2d36f32331953d20000341d3d1b",
    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}