{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42970",
    "entityType": "User",
    "nonce": "0x0a1de620e57d89d38b574dd2cbeeb525efc5a83486275f5e19fd30f1d427df26",
    "signature": "0xe604e9a8afeb2464dd37f24ef5c56913b4d357f10500f46271cce3719a7d54e110f3c00e4a632677d4a00d39cca04c6392c07cf884609c0b9ed5e2f452f8af6a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}