{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xfc94467b614b8aebb6d6d26f55179a1e3d6a6d94b1310eba5d1edafb58660756",
    "signature": "0xc68f628505dd78457d4bf861f30b43cca0e77b6cbd412f8befff14d4bb435ff241345f1dd5aebace7ef11d55c036ac450093d8274f83595055a31f6c3aefff181b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}