{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75624f0099732394c405eff129ba0fbd16be817c4efae68c5c744c6b5fbd3aac",
    "signature": "0x2ee446df23b2ce1cc5c0725a71abd58932e7ac2f9fc80ed9390af41cc49667411b5e2f519d9ea01ee632684ca435c9a50af303acc5d094431bbb15ac07c586f01c",
    "signer": "0x6d75bF5debA06aF9d3258742e974B93dC4fD227f",
    "userId": "602430498"
  }
}