{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778523",
    "entityType": "User",
    "nonce": "0xe9e892800eeab7c390eddd5a23431f88069a47646d97a02c918ed8ad0932126b",
    "signature": "0x71e2400a8b1c38e0c8633e6c01567fdc2698a86398d29057557561df1a3b78c17c01dabd5150205726db996275bbbb97f2b7d8213c64893e897e4e6b2f6542021b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}