{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154993",
    "entityType": "User",
    "nonce": "0xa2ad09bb469650ea7402a5400d819441b269555957240e4422d68a3ff000160d",
    "signature": "0x53a5a3ab0412528904fd24c074d75d0ddc1a679e36a78f65a9809ae5cb4aa5383cfbc00e93634e8d005bb527633745779e9abf0e668aa6d5eff84a83d73cfe4a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}