{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "861",
    "entityType": "User",
    "nonce": "0x3e38b00bc7d48d4e2e133b0543e6d40178bf3cb03d37e871fbebdbd9d25c1332",
    "signature": "0x7fb4e9f2cbdef33e01284fc1149f343c4e1b00d7f2a06d060ef18bbcc26b809e5102ac1c4be3a0252c96ff3aab0bfec89ea941bc3dad76ffe35618d7b2515da91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}