{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778620549",
    "entityType": "User",
    "nonce": "0xc0524bb1c7333f6038092ed4601f2a13191521f31e7cf96ff1e6c6b76e62b126",
    "signature": "0x7a6d4d6950ecdd1dbbb91a0c0588b02dd2c939912e25534150ab0b2dd2aac5564103cbb26bb6a45baed605490b19cce50dad933c5be56fdefb70612110b9b9461c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}