{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "687177546",
    "entityType": "User",
    "nonce": "0x0af74285762502f18a9975db029e29d24e9009e3d1f889d2396591eb6134c9b7",
    "signature": "0xc1b900c262062e295f00f917225b3f3229619c3af74ccc97fec4421e5fb8da9162673502ffd7d90ec7b0106a21d141242ee81b7bbedc8d98e41d9487e1cccea41c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}