{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108599",
    "entityType": "User",
    "nonce": "0xf2232edf1551ba246669ecf149534d53e02fafe9fb601460be3757eca95fbc90",
    "signature": "0xe583e333ef40cf2b337c8ba7e5e99f4a9d376fa79327141c78ef11aac0f722b71aca46cb78b4df1739020285ad6ead886c589ae5f1d051119d9242672e264d671c",
    "signer": "0xCaE1ee7dc4DB493ceab857fd89C09fA305C4c5d4",
    "userId": "648743045"
  }
}