{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf16c541628ffae1edcc0dbe15ef052659d7e0fee1825c792c68f0c1102eb0196",
    "signature": "0xd3b7ae7aa7d6738d7700ff16ac9f8d17459bfda2741eb2b8d66faf8153e074f9045512be5323c6beedf24bc49103d0b4aade05f1e25da7f6f60c05d886330e781c",
    "signer": "0x8EbB0297003F8F79082fee75F2Ab935eED775B56",
    "userId": "301375031"
  }
}