{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0x563d818e01aa510378ddeed5c9a96d83236cc53833f2a68a135fe12f0423f97a",
    "signature": "0xfcbd80d878777f2e734577602156c482345c70e76a61efac15f292ee138ac38c040128754059762d4c5ab99889c95cf97c563a308745d4819b0edc10f64ee4f71b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}