{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xf906c950af2821ea5dfa19ee09376e8976bb68a21c5c6a60cc1c6f878b361c6d",
    "signature": "0x620a080ed38755d24ac8ce70ece18b31c37b2914997c31819a67eec5df761edc40c11e28713211951a6175666cd889b7fe2b6f36184ab33acef5a6f200d857a91c",
    "signer": "0x621C1ffd4F2D9c750A93330767C1252dBa68Ec3A",
    "userId": "187371220"
  }
}