{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "295552",
    "entityType": "User",
    "nonce": "0x1534ac369c279597b5bc2fc08bc27597c42c367d3b57f6f4311a574e11893395",
    "signature": "0x9cd93d8b29be33d7481c8820caf6e71b1c149261b4bf6131d4c1c76589f428bd2b0719551d18bab34cae9be06475691665525380cad5b7e626c7e6989a7431191b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}