{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x84d5d95b00ab7fc404cdb45cb9295b13fe7a95dbb8d145ebb867536b9a33e76d",
    "signature": "0x8dfd412282ae10132bfed414c928134a97f4aede495060b12189939548ac99c6620111fcc8e54d0c4a895ca4a7f1e285f39ffc28015591a101a6ff9aa0c4e19b1b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}