{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "521149812",
    "entityType": "User",
    "nonce": "0x77a42543eee2d7f022659159003ecb3132292bc027228cbd66e18026586c2087",
    "signature": "0x6ae545ec3e17fe9480f2e31b81aee492d0ccb0128917ac072319f0cf35ef591a4daf17b70d13aeace90cf96246108baf3087231a4a975a923a9690284f90a34b1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}