{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145897505",
    "entityType": "User",
    "nonce": "0x5a81ed822fbe5b45f6dd6023fbe6d11378a5d2fb5865794ebe9f8b7e0a9153bd",
    "signature": "0xa5b13303ab72ab8282c424b121e7ed6461e1120c52381a5047cf02c74c0589ca1ba3f83252130f1df58053b6e757375cbd694cd558c9eb63dfab634e38a7a96a1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}