{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389938",
    "entityType": "User",
    "nonce": "0x62c91ff1b1e89291dbd5c7bcea7482475be80510ad110c98789c05a5197a7e68",
    "signature": "0x471f051807e89bdeaf01e282388e4fa4af482bbfb1d82e2b09337a3a58b7e46e547b97542acd3724b1383eebc6bf011ecc6da66d321fe50598320dd3adfc55fc1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}