{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994013869",
    "entityType": "User",
    "nonce": "0x0ab7a69145a7af641185c1d56184016fd1eb3ab6eaf81d1c37e7ddbb9439cc88",
    "signature": "0x2a48bc9e1f39cfb8258d8915fb438389a12cf4d072685a2ba76a617bc403a1ab474c7618f3a44c0cc69b17a7d0dae28fa591c34fb4cdbf5cfc89c197d5680e5c1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}