{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "763473",
    "entityType": "User",
    "nonce": "0xf3f54fc6650e6cc94ade725d5223f654b13b760a969f23effa92eb958b526cc6",
    "signature": "0xf1b57f5fdf937133d664d06757515efcb85f91b728fcebd68665f2883d10f19e0df3f67bda15f4879ee46f0c5d95c1ba725b4a413fcd6e95144eac91bd8a99381c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}