{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc1ae25ff8e3537b7ae6c33fa332a4f2e99c3579b2abb03e49cef34357a2bee72",
    "signature": "0xb4f108d559fec3252cbc330550dce824315034b0737149435d16799e018e2b1e755b8d0f8dfb69515f204a5ea82900cdfbfaa254b2c4a89aa017869221941c3d1b",
    "signer": "0x6327cd959Ed1548587D21Ea0cffa20C9A82c720E",
    "userId": "152334447"
  }
}