{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871324932",
    "entityType": "User",
    "nonce": "0x13ed441754a87bc6f3e949566ccc6210add85ca4abbce6c87f8c3a7d2a8ed6cc",
    "signature": "0x3c3b6f349d7f2618c45fa90e98c52c2b928df2d5324e25b83dd567b3a0f20ac17d25ed4a1fae3ba34b055dab5503587cf801de8bb01b0c84befc79ab5fd2fb151c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}