{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0xe708aa2e03a7e0400081ab90a77082e792df2c45e33594059d54779767cf5302",
    "signature": "0xb9e6e1d51ce8c79a7da2f84aa405e47f13253c95fae2e6764d5ce13b524a32f022586165e5f15ab4643fdcb8644a5740e05fc489f35bd48181b634db5fb396b61c",
    "signer": "0xd8414d8134902279e97471e479cC660e0b98a827",
    "userId": "33402495"
  }
}