{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x550e243346783a029961794d073071e19cafba0e65ef3ed11810447899d00e00",
    "signature": "0xc216680f67268662b874ac7e3e5cee6ed996daeb2e5cfec246e1a5016d1751f3391f509f051088c41b1527467253260519514c6dc5484804b59f432efa4c64961b",
    "signer": "0xFE17Fe2677AF57d35AbC9CeafeA4FF91C4542293",
    "userId": "934065758"
  }
}