{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0280346305e762b4f2657e305efe5e5abfa2ef13101c3725d75559c790efa138",
    "signature": "0x618fa6cf23b6750f44f5f27f65063bc3d822fc2a77cb2e5befb09f6e8a8e6b055d086790340a8c6c25627da2de9432a55d45fb420d89bc9b876b614d5bc14fbc1c",
    "signer": "0xc669278a2aaFC47D17da7a182Ee91296A8a5694F",
    "userId": "973146055"
  }
}