{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x7f097fbadaab517353ad8dc04ca51374879cd1d55b4985da6a6707976bea4ae0",
    "signature": "0x64eca5cfae7ca984e3dd8c4b71eeb54c445e30a2d44052a0580739e8c5b6dedb555dca1081683c7bc2c78e6b4380930588cbc0bac511c78f5a4895882bb215da1c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}