{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371523",
    "entityType": "User",
    "nonce": "0x381a51e6ad838f551aabf16cb6c807ada6ccee1a0ddba13471eeace3c9ed88f9",
    "signature": "0x38346a15b1e10ef362671e72f3112c34351437709c21174d16ebade4aee79a8a222232134f637169f1b026e23af006340881d98718419e2c215ff31550234f5c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}