{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x7e1590b121cbedc545d8f35dbc87185c5641284e835adcb769f9231759e3c9f6",
    "signature": "0xd6ce488e36320cecf86f7e5996210c4eb9690d4d3f95ee9387d646f8462619a6231a6528ed3c92e40db64092bad6a3064de8114532eef8a0dee0187f6c3577261c",
    "signer": "0xaa9597d3d2D028AC73c689f02E12E7e28A407E7B",
    "userId": "761103314"
  }
}