{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "548409021",
    "entityType": "User",
    "nonce": "0x2886c40d080752e015acaa09d4fb50a28b67c1b2618029a87b7f557c69730177",
    "signature": "0xafe017f2a8d72bb14621133187388f2ca9ffcaba31c58113ca664c12cc7946b20deb26c21bc3e78df0dbae4f5e5a470fcf4dc75c11ec8a49720d1ccaffb0c3ff1b",
    "signer": "0x6fb79570A836Ea8554ad1D745C12769B22f1e4E3",
    "userId": "283478"
  }
}