{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0xe6b55870fcf71f396ac27ae6b69c039436f095bdd6836aeba0cd966563f9be56",
    "signature": "0xb313067dbde98643832132c12671a2df888161c85a31f0832adc5d57780b1a2b5b9a6c37405f7af5b09d3ce1651bb14a37acc308676917b2f24c3e5aa198e3fb1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}