{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64474c3898f1d2063c6489a706be742ab84564970c8f027639f955f5e6d81655",
    "signature": "0xd44433a39c44e16b0accdde04540e90f98d21c7df8823caa721db584fc36134266a6ca29141511666efb82c2fd23f1907f3c83a33ea07907e2a1b56c97d877071b",
    "signer": "0xF146DAbBEa4a64091535c0e39A419D65150Fa66c",
    "userId": "449203874"
  }
}