{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0xc8113a64972292744393f144c3e5a337811625a218cfbf73e21cd073604f8a35",
    "signature": "0x60eac13d5471df7c0fa40f3c7e42297f4a134420fcaad713c215b00298ea0725342ba78aaa4353358e49cd2a0d72c89ccfb04d6efe4a528850e723af823be5051b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}