{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x9ec20938ea4b18150b3c330e4ffb828e0c8d74b1717f9e0126a461eb8948168e",
    "signature": "0x05c3805adfd8eabdbc86aa95aaeb71c84b2cb911b5555810bee877d591064d926b80504097a35122ddf2a1e682e12a26025289b6bf91d3da98a641480afb26261b",
    "signer": "0x845C209474b645d037e7A18bf22DAf7E3C2742F0",
    "userId": "660864214"
  }
}