{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54207",
    "entityType": "User",
    "nonce": "0xb9e756d1f41db1e2147a5f32f2a7a08041488c6533cdc99a1c78c1767b31f4ee",
    "signature": "0xe4a9a633db705f4cfb96c341b9b9c1a190673f44ce75387202741014c05b36244fd34a25a39dee0978297b6b220a03c238d88f80a5c40be859fc3c2627eef4731c",
    "signer": "0xd2A8B245BbEb9d6023dE5f5C663A3800822f2807",
    "userId": "194320283"
  }
}