{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197877",
    "entityType": "User",
    "nonce": "0xcf37e165e11540eedbb98169c81102f77f064ff66deb1ec86a96bbfd5e04f54c",
    "signature": "0xe89ea8f93c02c20fb04d4e07e6af296d5f29849f7945c68c4c6c2a5a3944e4142f6f9c0b0d986e4038ebe3e79d182a3f6936ae66f9f941a6b38b60531d1848231b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}