{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28729",
    "entityType": "User",
    "nonce": "0xc66e6f0a2cf995c4960d3217aa467d7f9f477e92054e3e05977da2fda460ff47",
    "signature": "0x8121cb6c163983f3faa93394cbe659287a58197b987c3a08cfbb8c2ebaecd36410bd37753d99b3d9145f974a298c4e90ca35e39b903c9c7b7816cd062f49060f1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}