{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216042",
    "entityType": "User",
    "nonce": "0x43714efccd2ea8ad889eb6e2ad552fad23b2b40b6e1fad71753bd97cdcbf1152",
    "signature": "0x4ed5b9a3bbd2f9ccfcb1bdefade8c76180d8f04194f1343e410b3a01271b1e63361bd7839fc184593ce6ea95bce3f5e75799a5fdb2d288eb575ba81c9d87c3f21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}