{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1feb4aa4ad053521a5dabc5df4df4caf4b4f757f3488bb2166ab2805b6c9c26c",
    "signature": "0x3710b74e2215e095708e90ecc45b76f2bc247e93512f5a4698350959981d5b9b2f1dcfdf90af6d1cc6443398ac5ac3faa099b0cd08eea6af239c804ff6b1298a1b",
    "signer": "0x190b45da1e3F48ad1551D8a1D4A02e17d847674f",
    "userId": "384443009"
  }
}