{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2febff6029e18f507f3453f79b97626be85bd31e37af666a98c5b1910865f761",
    "signature": "0xa86c7ec6b1583c7a2fd059d2a3317539ae9618838e959532f6ff4a7dae78ed7e75d0fa58fa741a5e7868253c6649104334c471bd9adc646bb92f14954d463a271b",
    "signer": "0xfb5377b2Ff33D3534FF2cB07966F62D256DBd94b",
    "userId": "412599210"
  }
}