{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x81877b2755f4dff183493d3125326147693fe332b39831616a896cce2522a0ad",
    "signature": "0xc0e24b7bc62732d354da5fa50c60f1be32c746520a289f60b462d6df9d93ed752a6666d1d04e0158528d7f8609bb1aa8db219cd7093cc411209ac69cdf9c595a1c",
    "signer": "0x4103B9Cb82fdD37eb101C5602F10F31F3258c587",
    "userId": "894539583"
  }
}