{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882574",
    "entityType": "User",
    "nonce": "0xd0218bc9153da62bbd91c6427118c7862f99f4f5e6e417b3e1f7abb18a36eff0",
    "signature": "0xf7d294e57cfa93eb8e27efbc060e32810baf45ec935c39cb32cf5859eca6da2c45ed3e1abc5b92a0953b8f267fd94a49d2878846f6f7ab16ec8a9356e20930a61b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}