{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "505572751",
    "entityType": "User",
    "nonce": "0x2a9830af4c3deb8e74d9930456ba93af01c3b6c84bb9689ecaecfc67e4928da9",
    "signature": "0x236299664cefd433259a38ed90b144f769700b547dd0c89f26a62cfb1da58e5651f2feac40be9262fed6805dc9e36f192b6f5f11b3d50ff574775213bf31a4f11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}