{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x7d3aec5c7e8684340eb6dd901063466595a5032eacc5a3e3b165c21d3b266715",
    "signature": "0xefe3529ea67605c0f1f0450b27aea1943b0dff66881b98df1e1386c5af5f88282f8c0457af0f2ce4f4aead2def175003af03ead17d421b6f30d24eeab867f6431c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}