{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x02cc18cfc9f6ec66127f59919bde9cfb916789b10d37fd817aec13c4ba7fff61",
    "signature": "0x98ae23ac053ac10e8a29cf697e2b0c2737dff6fd183cd443a7554b2918b4928935d95d6e945b3b41748c7914c37760fc4449eec590a87c91c1285b0ac01c16c11c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}