{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74127",
    "entityType": "User",
    "nonce": "0x197aec072067b742e96a0e4ca3cd6618b703ea520a68edc7b9918bb1023708c9",
    "signature": "0xd3d946645a205af0352a82a587c00f1452ac03206bca205f7593cefbbfc042383c2408835452a8b10003f3a9e4260f434b4ffb4a1986512a3b2627b0a76a8eb21c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}