{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0846fea2f115a4d2bd660ed910c64307e8a3d1f879aa0ba12e5dd1ec37f38af0",
    "signature": "0x7c99cf9f67851bac0274a8aa1f6de55662a36b2ec5cc07e140ee6702198e34690c1d957f1b01ba50c995d69f2110db33348fd607ae534e3f280a76918248e0ad1b",
    "signer": "0x539dA07eC1BAFf8fe039C98c2CA1507dD9B36504",
    "userId": "227507310"
  }
}