{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "220560",
    "entityType": "User",
    "nonce": "0xc1c0e2114b02608632f4d373da5a8dbea2d6ebf938508b8164dd6979e2c4cfeb",
    "signature": "0xbd60ff0d65af678060ecf67d62d5c9a6b921fadfd8e2f428dee0d5606398210a7f2493bb8dc12ffbd66e3bcbeeefe1d0e3fdea159bf39b1e5c1e205e7d9601b61b",
    "signer": "0x866CB73184a8420C302e3850B610761F882C4DDE",
    "userId": "166428182"
  }
}