{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "156881",
    "entityType": "User",
    "nonce": "0x4315fb7b9af2a2bce89bd8c86e103ae65d92919ce6184684f0ae64632600a3e4",
    "signature": "0xbfc68228cb9db82ff1ca2b9c90138f031de72e4aeb9db5ee8d5e26fae1a936a138e7f2195bb0735834742006fa8c6a05c3941c2855ac33f81308e87aaedc22071b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}