{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x327361c3eee6cf3a015c782c2ceea2b76e1a893a25c37a12eabb3b4815158196",
    "signature": "0x395895fdb7e7fbc6af16d68260640537fc4d6c3db57880c5de7e3dfe2ca82274208164cdd62fd91df66ed61219867d6005c3292cf6736088c3ed06d1ac7f3b751c",
    "signer": "0x21207E60f656919C704201b197a1bb7552571b2E",
    "userId": "725056109"
  }
}