{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319758166",
    "entityType": "User",
    "nonce": "0x7f1a6f5c3fe243dcc50adcd44b81ab6ad935abfd9d4d4a2f58b6b8c661829650",
    "signature": "0xf5885017cddda273ca0b74a3d41258c5f255a40e40d73456728d28edb85ae39528f75d9407d4acd3bbf49ce7bb1df237d0e3051554298011907f621f87cad4011c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}