{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372498",
    "entityType": "User",
    "nonce": "0x2f74dfc7837de2aecb8fca06d9964e012ea30f506aa021a1505673abca29274e",
    "signature": "0xc497323e78a80c4dff207dbbc9408a86852f5fc50d3717132c10f5fbfaf9566d67366e910ceba235c3f81135c9addc2ece77563a161d9db6b078af7f53574f101b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}