{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "183891",
    "entityType": "User",
    "nonce": "0xd2b48be4255e7a21313eb948ec5adad5773addd4db6e3ad943ee6e5c52ee8081",
    "signature": "0xa5d89f201d67db86e2f2205272c99b76440c4898cee13ad52468910e64269cb16f0f25c9af7f3c37c1d94fd073ea08cd52eb30d5f07eff60d7a387144a2865e11c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}