{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ba0b23d984ccabe30636e6320eec3bf2010dbaaeaca46f28973ac92d83ff3a6",
    "signature": "0xe4179b411068e2a56f542e87695dd15716d74b8078c970351b5202576518a4cb3604f9f318912c14279e8c5b91c9db7a105051afd899896576ab8411f7a2990d1c",
    "signer": "0xe8891C37b2d4E4Dc9cdEbEF9160b23a8B0900a90",
    "userId": "980020068"
  }
}