{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880975",
    "entityType": "User",
    "nonce": "0x2aaaf5e492e96b36f09de98794447585bb5f7d780c197f4fe91ce9afdefbe532",
    "signature": "0x401383174132bcf6530374c52e82aa15370d2ebd5297272e7be3646fdfda544d61465f64aa43f31b61ccae69cc38d82f036fdcd1d6ae69a3a4fd69df4507d4961c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}