{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8d4d499eaf1e82133436233aa351439e754f7ea4194c2fb151f85355fbe3b4e",
    "signature": "0x8cf2ed2954bf35025ad7118dd8ca70f14a961e22ab5f3806b962283d10e091553245477de91b7cf1d2a6f883857663510edb688c32360aab6d62746853a8597c1c",
    "signer": "0x4DDd196F82e57869E706Fd10381a359418B104Bb",
    "userId": "585727851"
  }
}