{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2154",
    "entityType": "User",
    "nonce": "0x974f10949880ce3a533f0f16bdb7e70d4d6d47512f22d8c9d53ba716a8da11a7",
    "signature": "0x46d0d1107028d6b1e735e92e96e5e2e5bc359764b963a77b82b40acf0a96da4571679e640cbade6b1ceb87f31bb73436057c25647e3707d56506d4145c2ac2c61b",
    "signer": "0x661038958CaBEA62127d3E61af25e811a6a1538A",
    "userId": "7339292"
  }
}